#741287 (PyPy3) No.177 制作進行の宮森あおいです！

• 問題: No.177 制作進行の宮森あおいです！
• ユーザー: ああいい
• 提出日時: 2022-02-22 12:51:08
• 言語: PyPy3 (7.3.15)
• 結果: AC
• 実行時間: 68 ms / 2,000 ms
• コード長: 2,859 bytes
• コンパイル時間: 510 ms
• コンパイル使用メモリ: 82,352 KB
• 実行使用メモリ: 71,308 KB
• 最終ジャッジ日時: 2024-06-30 13:50:53
• 合計ジャッジ時間: 2,041 ms
• ジャッジサーバーID （参考情報）: judge1 / judge5

ファイルパターン	結果
sample	AC * 3
other	AC * 13

ソースコード

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#Dinic法で最大流を求める
#deque のimport が必要
#逆辺追加しなきゃいけないから、
#グラフの構成はadd_edgeで行う
#最大流は　flow    メソッドで
from collections import deque
class Dinic:
    def __init__(self,N):
        self.N = N
        self.G = [[] for _ in range(N)]
        self.level = None
        self.progress = None
    def add_edge(self,fr,to,cap):
        forward = [to,cap,None]
        forward[2] = backward = [fr,0,forward]
        self.G[fr].append(forward)
        self.G[to].append(backward)
    def add_multi_edge(self,v1,v2,cap1,cap2):
        edge1 = [v2,cap1,None]
        edge1[2] = edge2 = [v1,cap2,edge1]
        self.G[v1].append(edge1)
        self.G[v2].append(edge2)
    def bfs(self,s,t):
        self.level = level = [None] * self.N
        q = deque([s])
        level[s] = 0
        G = self.G
        while q:
            v = q.popleft()
            lv = level[v] + 1
            for w,cap,_ in G[v]:
                if cap and level[w] is None:
                    level[w] = lv
                    q.append(w)
        return level[t] is not None
    def dfs(self,v,t,f):
        if v == t:return f
        level = self.level
        Gv = self.G[v]
        for i in range(self.progress[v],len(Gv)):
            self.progress[v] = i
            w,cap,rev = e = Gv[i]
            if cap and level[v] < level[w]:
                d = self.dfs(w,t,min(f,cap))
                if d:
                    e[1] -= d
                    rev[1] += d
                    return d
        return 0
    def flow(self,s,t,):
        flow = 0
        inf = 1 << 30
        G = self.G
        while self.bfs(s,t):
            self.progress = [0] * self.N
            f = inf
            while f:
                f = self.dfs(s,t,inf)
                flow += f
        return flow
    def min_cut(self,s):
        #最小カットを実現する頂点の分割を与える
        #True  なら　source側
        #False なら　sink側
        visited = [False for i in range(self.N)]
        q = deque([s])
        while q:
            now = q.popleft()
            visited[now] = True
            for to,cap,_ in self.G[now]:
                if cap and not visited[to]:
                    visited[to] = True
                    q.append(to)
        return visited
W = int(input())
N = int(input())
J = list(map(int,input().split()))
M = int(input())
C = list(map(int,input().split()))
dinic = Dinic(N + M + 2)
for i in range(N):
    dinic.add_edge(0,i+1,J[i])
for j in range(M):
    dinic.add_edge(N+j+1,N+M+1,C[j])
inf = 1 << 30
for j in range(M):
    l = list(map(int,input().split()))
    s = set(l[1:])
    for i in range(N):
        if i+1 not in s:
            dinic.add_edge(i+1,N+j+1,inf)
ans = "SHIROBAKO" if W <= dinic.flow(0,N+M+1) else "BANSAKUTSUKITA"
print(ans)
            
 
 
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